Lubricating-oil pump



Dec. 20, 1927. 1,653,538

D. O. BARRETT LUBRICATING'OIL PUMP Filed Jan. 8. 1927 4 Sheets-Sheet 1 i V I Mk V 4 gm! N nnnr WITNESSES .D. 0. Barre ATTORNEY Dec. 20, 1927.

D. O. BARRETT LUBRICA'I'IIIG OIL PUMP Filed Jan. 8. 192'? 4 Sheets-Sheet 3 INVENTOR llaBarretfi ATTORNEY Dec. 20, 1927. 1,653,538 D. o. BARRETT LUBRICATING OIL PUMP v Filed Jan. 8. 1927 4 Sheets-Sheet iNVENTOR WITNESSES 0. Barre it I ATTORNEY V BY M.

Patented Dec. 2 0, 1927.

UNITED STATES' 1,653,538 PATENTIOFFICE.

DWIGHT 0. BARRETT, F SPRINGFIELD, OHIO.

nunnrcn'rme-orr. rumr.

- Application filed January 8; 1927. Serial No. 159,989.

able openings lead from the manifold struc- 'ture to the various passage-ways of the pump. I v A still further ObJQOiZ of the invention is 15 to provide an improved lubricating oil pump wherein the usual method or system of pumping oil is carried out and in addition, a

hand operated pump is utilized, arranged to be reversed whenever desired so as to act at '20 one time in one direction for pumping oil or sump of the engine from the crank case from the filter to the and at another time bearings. In the accompanying drawings Figure 1 is an end view of an engine with an oil pump and associated parts embodying the invention applied thereto.

Figure 2 is a longitudinal vertical sectional" View through an oil pump and manifold disclosing certain features of the invention.

Figure 3 is a sectional view through Figgure 2 on line 3-3.

Figure 4 is a sectional view through Figure 2 on line 4-4.

Figure 5 is a sectional view through Figure 2 on line 5-5.

Figure 6 is a sectional view through Figure 2 on line 66.

Figure 7 is a sectional view through Figures 4 and 5 on the respective lines 7-7.

Figure 8 is a top plan view of the structure shown in Figure 2.

Figure 9 is a sectional view through Figures 4 and 5 on the respective lines 9-9.

Figure 10 is a sectional View through Figure 9 on line 10-10.

Figure 11 is a schematic diagram showing the various pathsthrough which the oil flows. Figure 12 is a detail fragmentary perspective view showing the manifold and certain surrounding parts.

Figure 13 is a fragmentary sectional view similar to FigureQ but showing a modified "Referring to the of the engine,

filter. The pump used for pumping ,oil to d arrangement, part of the pump being broken away.

Figure 14 is but showing a invention.

a view similar to Figure 13 further modified form of the accompanying drawings by numerals, 1 indicates the engine and 2 the filter or oil supply tank of any desired kind. In oil burning engines and also other engines using a filter 2, suitable systems of pipes and suitable pumps are provided for drawing oil from the crank casing or sump coupling the same to the filter for drawing the filtered oil from the filter and forcing the filtered oil to the bearings of the engine. It is customary to have two pumps for this work, one to pump the oil to the filter and one to pump the oil froni the the filter usually works at a maximum spee so that sometimes the filter overflows and the overflow is ledby suitable pipes back into the sump or crank casing.

The structure 'just described is old and well known and generally speaking, the present inventlon uses the same principle of circulation of oil but provides a different form of pumpingzstructure in some respects and an entirely new arrangement of connecting the pumping structure to the circulating pipes and a new structure and method of using a hand operated pump.

As indicated in Figure l, the entire pumpmg structure 3 is connected with the engine so that oil is drawn through a pipe 4: and forced through pipe 5 to the various bearrage of the engine/ A hand operated crank 6 is shown in Fi ure 1 which operates one of the pumps of structure 3, there being three pumps as shown in Figure 2. As indicated in Figure 2, 7 indicates a hand operated pump, 8 and 9 the two power operated pum s and 10 the connecting castin or manifold. The pumps 7, 8 and 9 are 0 the usual gear structure and pumps 8 and 9 are driven by theshaft 11 operated by the engine 1. The pump 7 is operated by the crank 6 and may be actuated in either direction, one direction being from the crank casing and force the same in the filter 2 and the other direction being used to draw filtered oil from the filter 2 and force the same out throu h the distributing pipes 5 to the bearings o the engine. The pump 9 intended to draw oil from the'crank case utilized to draw oil I and force the same into the filter 2 while pump 8 draws 011 from the filter 2 and forces the same into the pressure line of the distributing pipes 5. The various pumps 7, '8

Pump 9 "is provided with a flange 16 which is clamped to the manifold 10 and to part of the engine Lby suitable bolts 17. The

- manifoldlO is separately secured to the engine 1 by screws 18 whereby the entire pump structure 3 may be removed bodily on removing the various screws 17. The pipes 4 and 5 and also other pipes are connected to the manifold so that in removing the pump 9. and associated pumps, none of the distributing or circulating pipes associated with theengine are'disconnected or in any way molested. As amatter of fact, there are four pipes connected with manifold 10.

as indicated in Figure 6, pipe 4 leading from the filter, pipe 4 leading to the filter 2, pipe 5 leading to all of the pressure lines or d1stributing pipes and pipe 5 leading from the crank casing or sump. During the actuation of pumps 8 and 9, pump 9 Wlll draw in oil from the crank casing through.

pipe 5 and force the same'out through pipe 4' to the filter. While this is being done the pump 8 will draw filtered oil from the filter 2 through pipe 4: and discharge the same out pipe 5 to the distributing system. The manifold 10 is left continually in position as the various circulating pipes are connected therewith.

As indicated in Figure 12, passageways 19, 20,21 and 22 are provided with outlets 23, 24:, 25 and 26, said outlets leading to certain passage-ways in pump 9 and from thence into'pumps 8 and 7. Pipe 5 leads from the crank casing or sump of the engine and is in continuous communication with passage-way 21. The passage-way 21is continuallyopen to the suction cham ber 27 of pump 9. The pump 9 draws the oil from the suction chamber 27 and forces the same out through thecompression chamber 28, -outlet 24, passage-way 20 to pipe 4' and from thence to. the top'of the filter 2. During the-operation of the engine, pump'9 is in continuous operation and is functioning at full capaclty, the oil being drawn from the sum as just described and forced to the top 0 the filter. Any surplus oi'l forced into the filter will. pass through a suitable pipe backinto the sump. At the same time that pump 9 is functioning as just described, pump 8 will be drawing oilfrom the bottom of the filter and forcing the same into the pressure line; for lubricating the different parts of the engine. As pump the various 8 functions, oil is drawn through pipe Unto passage-way 19 and from thence through the outlet 23 to the passage-way 29 formed in the casing of pump 9 and from thence to the suction opening 30 of pump 8. Pump 8,

as shown in Figure 4, forces the oil out ure 4. A by-pass is formed as indicated in Figure 4 so that the surplus oil passes through the passage-way 34, past the valve member 33 and back to the passage-way to the suction side of the pump. The spring 36 continually acts on the valve member 33 for holding the same to its seat, said spring being maintained under compression and also brought under different compressions by the adjusting screw 37. By varying the adjusting screw 37, more or lessoil is'bypassed and, consequently, more or less oil is fed to the bearings of the engine. It will thus be noted that, the pump 9 functions'to supply oil from the sump of the'engine to the upper part of the filter and that pump 8 functions to draw oil from the lower part of the filter and forces the same through the pressure line to provide lubricant'at the desired point.

When the engine is in operation, these two pumps continue to function as described.

However, when the engine is stopped, these pumps will, of course, stop as they are connected to the engine in a suitable manner so as to be driven thereby at a proper speed. WVhen the engine stops, the pumps 8 and .9 cease to function and, consequently, the bearings of the engine will gradually become drained so that if the engine is started up Without providing new 011 in thepressure line, some of the bearings may beburned out before pressure can be built up; To ohviate this heretofore, a-separate pumping system was used to buildup a temporary pressure before the engine was started.v In the present invention, a hand pump 7 has been provided which will'act as pump 8 for forcing oil through the pressure lines whenever there is oil in the bottom of the filter 2. Sometimes it happens that the filter 2 becomes empty through the leakage or carelessness of the operator. When this occurs, the pump 7 is operated in a reverse direction and through certain mechanism hereinafter fully described, will draw oil from the sump and force the same into the bottom of the filter. .After the desired quantity has been forced into the bottom of the filter, the pump 7 is then operated in the proper direction whereby the oil from the ottoin of the filter will be drawn into- 7 will draw oil from the sump and discharge opening pump 7 and forced out through the pressure line 5. As the pump 7 operates in a reverse direction manually, oil is drawn from the sump through pipe 5', passage-way 21, outlet 25, suction chamber 27, passa e-way 38, passage-way 39 in the casing 0 pump 7 passage-ways 40' and 4 1 (Figure 3), past valve 42 which is now open and from thence through the passage-way 43 to the compresslon chamber 44 which is now acting as asuction chamber. Oil from chamber 44 will pass to the suction chamber 45 now acting as a compression chamber and from thence through the suction chamber 30, passage way 29, outlets 23, passage-way 19, and pipe 4 to the-bottom of the filter 2. Itwill be understood that the valve 42 (Figure 3 must be manually opened before the pump is operated in a reverse direction. It will also be noted that the reverse direction of pump the same into the lower part of the filter 2.

. As the pump operates in a reverse direction,

the spring pressed valve 46 will prevent either oil 'or air being drawn back through 47 and passage-way 31 and line 5 which would interfere with the desired action of the ump 7. After a desired quantity of oil as been forced into the lower part of the filter, valve 42 is closed manually and then the pump 7 is actuated in a proper direction whereupon it will act in the same manner as pump 8 and will draw oil, from the lower part of the filter and force the same into the pressure line 5, past the spring pressed valve 46. This valve 46 also prevents the pressure in passage-way 8 is acting" normally from 7, causing same to either ro- As the pump 7 oil will pass 31 when pump acting on pump tate or else allow leakage. operates in a correct direction,

down from the lower part of the filter 8 and 9 will begin to function as heretofore ;through the pipe 4, through passage-way 19, outlet 23, passage-way 29,suction opening 30, suction opening 45,- through ump7 to the pressure chamber 44, throng passageway 47, past the valve .46 into passage-way 31 and from thence through passage-way 32, outlet 26 and passage-way 22 to the pressure line 5. The pump is operated in this manner a sufficient time to properly supply oil to all of the bearings of the engine and then theengine is started whereupon pumps described. At this time the pump 7 may be stopped and will remain idle until the engine is again started. If there is a sufiicient quantity of oil in the filter 2, pump 7 is not operated in the reverse direction but in the proper direction for drawing oil from the lower part of the filter 2 and forcing the same into the pressure line 5.

From Figure 2 and also certaln of t e pumps.

. of the engine 3 casing other figures, it will be noted that the cas r.

in s of all of the pumps are bolted or are he d together by screws and that the casing of pump 9 is bolted to the manifold 10 and also 'to part of the engine 1. However','mani- I fold 10 is separately bolted or screwed to the en ine 1 as indicated in Figure 2 so that I when the bolts 17 are removed, the pumps maybe disconnected without molesting the manifold 10 or any of the distributing pipes pumps 8 and 9 could be mounted as described.

Also, if desired, a manually actu-' ated pump could be omitted and the regular In Figure 13, a slight-1y modified form of v the invention isshown wherein the pump structure illustratedin Figure 2.is connected d rectly to an enlargement 48 forming part of the engine casing 1. The enlargement 48 is provided with passage-ways and ports identical with that shown in' the preferred form and illustrated for instance, in Figures 6 and 12. By providing the enlargement 48 as a casting integral wit-lr the casing, the manifold shown in Figure 12 is eliminated but the pumps may be bolted directly in place and removed as in the preferred form.

Under some circumstances it may be desired to bolt a single pump to a manifold orto the enlargement 48. In Figure 14, part illustrated with a single pump-49 bolted directly to the casing while at the upper parta manifold 50 similar to manifold 10 has 1 and engine parts arebeen provided. A single bar 51 is connected I with manifold 50 and continually operates during the operation'of the engin'e. Preferably the manifold 50 is only provided with two sets of ports and passage-ways instead of four as this arrangement is connected to the oil filter and to the distributing system while pump 49 is connected through suitable pipes to the sump of the engine and to the top of the filter whereby pump 49 pumps oil from the sump to the top of the filter and pump 51 pumps oil from filter and forces the same. through the lubri-"-- eating system. It is, of course, evident that a single pump, could be bolted to the enlargement 48, a double bar or a triple bar as shown in Figure 2 and regardless of the kind or number of pumps connected, the enlargement 49 would act as a manifold for receiving the various pipes to and from the filter, from the sump to the lubricating system.

What I claim is: i

1. A lubricating oil pump structure comprising an oil raising (pump, an oil distributmg pump and a ham operated pump, said oil raising pump the bottom of the its having four ports, one port acting as an inlet por and a second port engine having a thickened acting as an outlet port while the two remaining ports act as passage-ways, said oil distributing pump having an inlet port registering with one of the passage-ways in said oil raising pump, a discharge port registering with the other of said passage-ways in said oil raising pump, and means forming part of the hand operated pump presenting ports in registry with the inlet port of the oil raising pump and a second port in registry with the inlet port of the oil distributing pump. 2. In a lubricating oil pump structure, the combination with an engine provided with a sump, a filter and lubricating system, said ortion in the casing provided with a pluraiity of passageways and ports, a pump structure bolted directly to said thickened portion, said pump structure including three pumping units, power means for connecting together and operating simultaneously two of the units, and a hand operated member for operating the third unit, removable means for removably connecting said units together, all of said units being provided with ports and the ports of one unit acting as passage-ways for the next adjacent unit, the ports of the pump adjacent the thickened part of the engine casing registering with the ports in said thickened part whereby as said pumps function oil will pass through-said ports to. and from the filter, from the sump and to the oiling system.

3, An oil pump structure for drawing oil from a supply and forcing the same to a point of utilization, said pump structure including three pump units, means for disengageably connecting said units together,-

means for causin two of the units to operate in unison, a. hand operated memberfor causing the third unit to function, the first unit being formed with a compression and a suction chamber extending entirely through the unit and twoauxiliarypassage-ways, the other power driven unit having a suction and a compression passage-way and one auxiliary passage-way registering with one of the auxiliary passage-ways in the first unit, and

a hand operated unit having a compressing and suction passage-way and a connecting passage-way for connecting the compression passage-way with the auxiliary passage-way of the second unit, and a hand operated valve for controlling the third passage-way in the hand operated unit.

4. A lubricating oil pump structure comprising three pumping units, power driven means for connecting to ether and operating simultaneously two of the units, and a hand said hand operated unit being reversible so u that when operating in one direction it will draw in oil through the inlet of one of said first mentioned units and force oil out through the inlet of the second mentioned unit and when operated in the opposite direction will draw oil through the inlet of the second mentioned power unit and force oil out through the passage-way formed with the first mentioned units.

' DWIGHT O. BARRETT.

operated member for operating the third 

